Specifications
Voice Gateways System Manual 3
1.2 Specifications

1.2.1 Telephony and Fax Services

1.2.2 Security

Table 1-1: Telephony and Fax Services
Item Description
VoIP Standard H323 model: H323v2/4
SIP model: SIP (RFC 3261)
Internal Class 5 Services Call Waiting, 3-party call, call hold and call alteration,
differentiated ringing tones (refer to Appendix A for more
details)
External Class 5 Services Activation/deactivation of class 5 services supported by
the IP-telephony system
Fax G3 compliant V.17 14.4 Kbps fax reception and
transmission using the T.38 standard (or in-band using
G.711 codec)
Calling Number Identification
(CNI)
FSK, DTMF
3rd party initiated pause and
rerouting
External rerouting of media stream during speech, e.g.
for pre-paid calling card and record announcement
DTMF In-band and out-band using H.245 and H.225
Regional Settings Telephony signals, tones and cadences (see
Appendix B)
Table 1-2: Security
Item Description
VLAN Support IEEE 802.1Q with up to 16 VLAN IDs
Authentication Per call authentication and registration